Commit Graph

8 Commits

Author SHA1 Message Date
Michael Kuperstein 3e3652aef2 Recommit r274692 - [X86] Transform setcc + movzbl into xorl + setcc
xorl + setcc is generally the preferred sequence due to the partial register
stall setcc + movzbl suffers from. As a bonus, it also encodes one byte smaller.
This fixes PR28146.

The original commit tried inserting an 8bit-subreg into a GR32 (not GR32_ABCD)
which was not appreciated by fast regalloc on 32-bit.

llvm-svn: 274802
2016-07-07 22:50:23 +00:00
Michael Kuperstein edb38a94f8 Revert r274692 to check whether this is what breaks windows selfhost.
llvm-svn: 274771
2016-07-07 16:55:35 +00:00
Michael Kuperstein 1ef6c59b1d [X86] Transform setcc + movzbl into xorl + setcc
xorl + setcc is generally the preferred sequence due to the partial register
stall setcc + movzbl suffers from. As a bonus, it also encodes one byte smaller.

This fixes PR28146.

Differential Revision: http://reviews.llvm.org/D21774

llvm-svn: 274692
2016-07-06 21:56:18 +00:00
Craig Topper 8287fd8abd [X86] Remove SSE/AVX unaligned store intrinsics as clang no longer uses them. Auto upgrade to native unaligned store instructions.
llvm-svn: 271236
2016-05-30 23:15:56 +00:00
Elena Demikhovsky e79b716daf Fixed lowering of _comi_ intrinsics from all sets - SSE/SSE2/AVX/AVX-512
Differential revision http://reviews.llvm.org/D19261

llvm-svn: 269569
2016-05-14 15:06:09 +00:00
Elena Demikhovsky 24aba1ca38 The test files are auto-generated by update_llc_test_checks.py utility.
No functional changes.

llvm-svn: 268498
2016-05-04 14:31:18 +00:00
Elena Demikhovsky 4aed59fc89 AVX-512: Enabled SSE intrinsics on AVX-512.
Predicate UseAVX depricates pattern selection on AVX-512.
This predicate is necessary for DAG selection to select EVEX form.
But mapping SSE intrinsics to AVX-512 instructions is not ready yet.
So I replaced UseAVX with HasAVX for intrinsics patterns.

llvm-svn: 237903
2015-05-21 14:01:32 +00:00
Craig Topper 5b7c2b4f0d Add tests for SSE intrinsics in non-avx mode by copying from the AVX test cases. Some of these may have been tested by other tests, but most weren't. Patch by Cameron McInally.
llvm-svn: 193309
2013-10-24 06:45:13 +00:00